The two main sources of energy in the body are?

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The 2 sources of energy(calories) which are
also known as macronutrients
areycarbohydrates and fat. Of these two,
carbohydrates are the body's preferred
source of energy. Carbohydrates break
down into glucose, which is an immediate
source of energy especially for the brain
and muscles.

Answers (4)

Your body gets energy from what you
eat. We think of energy in the human
body in terms of calories.
Calories, also known as kilocalories,
are the units of measurement for
dietary energy. Carbohydrates and
protein provide 4 calories per gram
while fat provides 9 grams of calories
per gram. Although not usually
included in these discussions, alcohol
is another source of energy,
providing 7 calories per gram, but
most sources of alcohol do not
provide essential nutrients.
Carbohydrates, however, are the
primary source of energy for the
body.
At the molecular level, we have
adenosine triphosphate, ATP. This is
the sole source of energy for all
human metabolism.
Because ATP is so important, the
body has evolved three different
systems to create ATP so that a
sprinter is getting ATP in a
completely different way from a
marathon runner. They are called the
Phosphagen system, the Glycogen-
lactic acid system and Aerobic
respiration.

The 2 sources of energy(calories) which are
also known as macronutrients
areycarbohydrates and fat. Of these two,
carbohydrates are the body's preferred
source of energy. Carbohydrates break
down into glucose, which is an immediate
source of energy especially for the brain
and muscles.

The 2 sources of energy(calories) which are also known as macronutrients areycarbohydrates and fat. Of these two, carbohydrates are the body's preferred source of energy. Carbohydrates break down into glucose, which is an immediate source of energy especially for the brain and muscles.

There are 2 sources of energy(calories)
which are also known as
: carbohydrates, protein,
and fat. Of these two carbohydrates
are the body's preferred source of
energy. Carbohydrates break down into
glucose, which is an immediate source
of energy especially for the brain and
muscles.